@BOOK{NAP238, author = "National Research Council", title = "Indicators of Precollege Education in Science and Mathematics: A Preliminary Review", isbn = "978-0-309-07838-2", doi = "10.17226/238", abstract = "Many studies point to the inadequacy of precollege education in the United States. How can it be improved? The development of effective policy requires information on the condition of education and the ability to measure change. This book lays out a framework for an efficient monitoring system. Key variables include teacher quality and quantity, course content, instructional time and enrollment, and student achievement.", url = "https://nap.nationalacademies.org/catalog/238/indicators-of-precollege-education-in-science-and-mathematics-a-preliminary", year = 1985, publisher = "The National Academies Press", address = "Washington, DC" }